Method and device in wireless communication

ABSTRACT

The present disclosure provides a method and a device in wireless communication. In one embodiment, the UE first receives a first signaling, then receives a second signaling, and finally receives a first radio signal on target time-frequency resources; wherein the target time-frequency resources comprise time-frequency resources among second time-frequency resources other than first time-frequency resources, and the second signaling is used for determining whether the target time-frequency resources comprise the first time-frequency resources and the second time-frequency resources. The present disclosure makes effective use of the remaining time-frequency resources that transmit control information in a time interval less than 1 millisecond, thus improving resource utilization.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation application of U.S. application Ser.No. 16/261,583, filed Jan. 30, 2019, which is a continuation ofInternational Application No. PCT/CN2017/094639, filed Jul. 27, 2017,claiming the priority benefit of Chinese Patent Application SerialNumber 201610638012.6, filed on Aug. 5, 2016, the full disclosure ofwhich is incorporated herein by reference.

TECHNICAL FIELD

The present application relates to transmission schemes in wirelesscommunication systems, and in particular to a method and a device forlow-latency transmission based on Long Term Evolution (LTE).

BACKGROUND

The 3^(rd) Generation Partner Project (3GPP) Radio Access Network (RAN)#63 plenary meeting decided to study the subject of reducing latenciesof LTE networks. The latencies of LTE networks include radio latency,signal processing delay, transmission delay between nodes, and the like.With the upgrade of wireless access networks and core networks,transmission delay is effectively reduced. With the application of newsemiconductors having higher processing speeds, the signal processingdelay is significantly reduced. At the RAN #72 plenary meeting, 3GPPdecided to standardize the shortening of Transmission Time Intervals(TTIs) and the signal processing delay based on previous researchachievements.

In existing LTE systems, a TTI or a subframe or a Physical ResourceBlock (PRB) pair corresponds to one milli-second (ms) in time domain. Inorder to reduce network latencies, 3GPP decided to standardize shortTTIs, for example, in LTE Frequency Division Duplexing (FDD) systems,2-Orthogonal Frequency Division Multiplexing (OFDM) symbol downlink TTI,1-Timeslot (TS) TTI downlink TTI and 2-OFDM symbol uplink TTI, 4-OFDMsymbol uplink TTI and 1-TS uplink TTI are introduced, and in LTE TimeDivision Duplexing (TDD) systems 1-TS TTI is introduced for both uplinkand downlink.

Resource scheduling in LTE is carried out through Downlink ControlInformation (DCI), and DCI is transmitted through a Physical DownlinkControl Channel (PDCCH) or an Enhanced PDCCH (EPDCCH). In order tosupport short TTIs, 3GPP decided to introduce a downlink control channeltransmitted in short TTIs (which is temporarily named short PDCCH(sPDCCH)). The sPDCCH transports uplink and downlink schedulinginformation or other control information in all or parts of sTTIs.

SUMMARY

In one short TTI, a base station may schedule multiple User Equipments(UEs) simultaneously, however each scheduled UE can learn onlytime-frequency resources occupied by its own control information, butcannot learn time-frequency resources occupied by control information ofother UEs. If downlink data transmissions of all UEs are restricted toparticular time-frequency resource areas in a simple manner just toavoid the downlink data transmission of one UE colliding with thetime-frequency resources occupied by the control information of otherUEs, then in the condition that only a few UEs are scheduled,time-frequency resources in idle control areas still cannot be allocatedto the downlink data transmissions of the scheduled UEs. Consequently,resource waste is caused and spectrum efficiency is decreased. Sincetime-frequency resources of short TTIs are limited, the above problembecomes extremely significant in the case of short TTIs.

In view of the problem that resources in idle control information areascannot be effectively used, the present disclosure provides a solution.It should be noted that embodiments in the UE of the present disclosureand the characteristics in the embodiments may be applied to the basestation if no conflict is incurred, and vice versa. Further, theembodiments of the present disclosure and the characteristics in theembodiments may be mutually combined if no conflict is incurred.

The present disclosure provides a method in a UE for low latency,wherein the method includes:

receiving a first signaling;

receiving a second signaling; and

receiving a first radio signal on target time-frequency resources.

Herein, first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

In one embodiment, the first signaling is a high-layer signaling, andthe second signaling is a physical-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling,and the second signaling is a physical-layer signaling.

In one embodiment, the first time-frequency resources are used fortransmitting at least one of L signaling(s), the L is a positiveinteger, and the L signaling(s) includes the second signaling.

In one embodiment, the second signaling indicates within the firstresource pool the first time-frequency resources.

In one embodiment, the second time-frequency resources and the firsttime-frequency resources are partially overlapped.

In one embodiment, the second time-frequency resources and the firsttime-frequency resources are orthogonal (that is, non-overlapped atall).

In one embodiment, the second time-frequency resources include the firsttime-frequency resources.

In one embodiment, the phrase that the first resource pool is reservedto downlink physical layer signalings refers that: the first resourcepool is preferentially occupied by the former one of {the downlinkphysical layer signalings, downlink physical layer data}.

In one embodiment, the phrase that the first resource pool is reservedto downlink physical layer signalings refers that: the first resourcepool can be occupied by the downlink physical layer signalings only.

In one embodiment, the second signaling can dynamically indicate thefirst time-frequency resources, thereby ensuring that the targettime-frequency resources can effectively occupy the remaining of thefirst time-frequency resources, so as to improve resource utilizationand system spectrum efficiency.

In one embodiment, the second signaling is Downlink Control Information(DCI).

In one subembodiment, a UE-specific indication can be realized through aDCI, maximizing the flexibility of indication.

In one embodiment, the second signaling includes a Control FormatIndicator (CFI).

In one embodiment, the second signaling is transmitted through a firstphysical channel, and the first physical channel is used for indicatingtime-frequency resources occupied by a DCI in the first time interval.

In one embodiment, the second signaling is transmitted in the first timeinterval.

In one embodiment, the second signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of {a Resource Allocation (RA), a Modulation and Coding Scheme(MCS), a New Data Indicator (NDI), a Redundancy Version (RV) and a HARQprocess number}.

In one embodiment, the target time-frequency resources and the firsttime-frequency resources are orthogonal, wherein the orthogonal meansthat there is no time or frequency belonging to both the targettime-frequency resources and the first time-frequency resources.

In one embodiment, the target time-frequency resources are consecutivein frequency domain.

In one embodiment, the target time-frequency resources are discrete infrequency domain.

In one embodiment, the target time-frequency resources are consecutivein time domain.

In one embodiment, the target time-frequency resources are discrete intime domain.

In one embodiment, the target time-frequency resources include Rsubcarriers in frequency domain, wherein the R is a positive integer. Inone subembodiment, the R is a multiple of 12. In another subembodiment,any two of the R subcarriers occupy the same number of time-domain OFDMsymbols. In another subembodiment, two of the R subcarriers occupydifferent numbers of time-domain OFDM symbols.

In one subembodiment, when two of the R subcarriers occupy differentnumbers of time-domain OFDM symbols, the target time-frequency resourceshave the highest flexibility of allocation.

In one embodiment, the first time-frequency resources are consecutive infrequency domain.

In one embodiment, the first time-frequency resources are discrete infrequency domain.

In one embodiment, the first time-frequency resources are consecutive intime domain.

In one embodiment, the first time-frequency resources are discrete intime domain.

In one embodiment, the first time-frequency resources include Hsubcarriers in frequency domain, wherein the H is a positive integer. Inone subembodiment, the H is a multiple of 12. In another subembodiment,any two of the H subcarriers occupy the same number of time-domain OFDMsymbols. In another subembodiment, two of the H subcarriers occupydifferent numbers of time-domain OFDM symbols.

In one embodiment, the first time-frequency resources belong to thefirst time interval in time domain.

In one embodiment, time-domain resources of the first time-frequencyresources are part of the first time interval.

In one embodiment, the first time interval includes Q consecutivetime-domain OFDM symbols, the OFDM symbols include cyclic prefixes, andthe R is a positive integer. In one subembodiment, the R is one of {2,4, 7}.

In one embodiment, time-domain resources of the target time-frequencyresources are parts of the first time interval.

In one embodiment, the target time-frequency resources are parts of thesecond time-frequency resources.

In one embodiment, the target time-frequency resources are the same asthe second time-frequency resources.

In one embodiment, the second time-frequency resources are consecutivein frequency domain.

In one embodiment, the second time-frequency resources are discrete infrequency domain.

In one embodiment, the second time-frequency resources are consecutivein time domain.

In one embodiment, the second time-frequency resources are discrete intime domain.

In one embodiment, the second time-frequency resources include Jsubcarriers in frequency domain, wherein the J is a positive integer. Inone subembodiment, the J is a multiple of 12. In another subembodiment,any two of the J subcarriers occupy the same number of time-domain OFDMsymbols. In another subembodiment, two of the J subcarriers occupydifferent numbers of time-domain OFDM symbols.

In one embodiment, a transport channel corresponding to the first radiosignal is a Downlink Shared Channel (DL-SCH) mapped within the firsttime interval.

In one embodiment, the first radio signal is an output after the firstbit block is processed sequencially through channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals. In one subembodiment, the first bit block includes oneor more Transport Blocks (TBs). In one subembodiment, the first bitblock is part of a TB.

In one embodiment, through the configuration of the first resource pool,signaling overheads indicating the first time-frequency resources can beeffectively reduced, meanwhile, the flexibility of allocation of thefirst time-frequency resources is ensured.

In one embodiment, the first signaling is a high-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling,and the first signaling includes scheduling information of the firstradio signal, and the scheduling information includes at least one of{an RA, an MCS, an RV, an NDI, a HARQ process number}.

In one embodiment, the first signaling is DCI.

In one embodiment, the first resource pool is consecutive in frequencydomain.

In one embodiment, the first resource pool is discrete in frequencydomain.

According to one aspect of the present disclosure, the above method ischaracterized in that: the second signaling indicates whether the targettime-frequency resources include the first time-frequency resources, andthe first time-frequency resources are common parts of the firstresource pool and the second time-frequency resources.

In one embodiment, the target time-frequency resources and the firsttime-frequency resources are orthogonal, wherein the orthogonal meansthat there is no time or frequency belonging to both the targettime-frequency resources and the first time-frequency resources.

In one embodiment, the target time-frequency resources include the firsttime-frequency resources.

In one embodiment, the first time-frequency resources are null.

In one embodiment, the first time-frequency resources include at leastone Resource Unit (RU). The RU occupies one subcarrier in frequencydomain and occupies a duration of one OFDM symbol in time domain.

According to one aspect of the present disclosure, the above method ischaracterized in that: the second signaling is used for determining afirst time-frequency pattern from P time-frequency pattern(s), the P isa positive integer, the first time-frequency pattern is a time-frequencylocation distribution of the first time-frequency resources in the firstresource pool; and the P time-frequency pattern(s) is(are) predefined,or the P time-frequency pattern(s) is(are) configurable.

In one embodiment, the introduction of the P time-frequency patterns caneffectively reduce signaling overheads required to indicate the firsttime-frequency resources.

In one embodiment, the P time-frequency pattern(s) is(are) predefinedimplicitly.

In one embodiment, the P time-frequency pattern(s) is(are) predefinedexplicitly.

In one embodiment, the P time-frequency pattern(s) is(are) related tothe first resource pool.

In one embodiment, the P time-frequency pattern(s) belongs(belong) tothe first resource pool.

In one embodiment, the P time-frequency pattern(s) is(are) configuredthrough the first signaling.

In one embodiment, the P time-frequency pattern(s) is(are) configuredthrough a physical layer signaling.

In one embodiment, the P time-frequency pattern(s) is(are) configuredthrough a Radio Resource Control (RRC) signaling.

In one embodiment, the P time-frequency pattern(s)corresponds(correspond) to P frequency offset(s), and frequency startingpoint(s) of the P frequency offset(s) is(are) predefined.

According to one aspect of the present disclosure, the above methodfurther includes:

receiving a third signaling.

Herein, the third signaling is used for determining frequency-domainresources that can be occupied in the first time interval; and {thetarget time-frequency resources, the first time-frequency resources, andthe second time-frequency resources} all belong to the frequency-domainresources that can be occupied in the first time interval.

In one embodiment, the third signaling is a high-layer signaling.

In one embodiment, the third signaling is a physical-layer signaling.

In one embodiment, the third signaling is a physical-layer signaling,the third signaling includes scheduling information of the first radiosignal, and the scheduling information includes at least one of {an RA,an MCS, an RV, an NDI, a HARQ process number}.

In one embodiment, the third signaling is DCI.

In one embodiment, frequency-domain resources occupied by the first timeinterval are consecutive in frequency domain.

In one embodiment, frequency-domain resources occupied by the first timeinterval are discrete in frequency domain.

In one embodiment, frequency-domain resources occupied by the first timeinterval include W subcarrier(s), wherein the W is a positive integer.In one subembodiment, the W is a multiple of 12.

The present disclosure provides a method in a base station for lowlatency, wherein the method includes:

transmitting a second signaling;

transmitting a first signaling; and

transmitting a first radio signal on target time-frequency resources.

Herein, first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

According to one aspect of the present disclosure, the above method ischaracterized in that: the second signaling indicates whether the targettime-frequency resources include the first time-frequency resources, andthe first time-frequency resources are common parts of the firstresource pool and the second time-frequency resources.

According to one aspect of the present disclosure, the above method ischaracterized in that: the second signaling is used for determining afirst time-frequency pattern from P time-frequency pattern(s), the P isa positive integer, the first time-frequency pattern is a time-frequencylocation distribution of the first time-frequency resources in the firstresource pool; and the P time-frequency pattern(s) is(are) predefined,or the P time-frequency pattern(s) is(are) configurable.

According to one aspect of the present disclosure, the above methodfurther includes:

transmitting a third signaling.

Herein, the third signaling is used for determining frequency-domainresources that can be occupied in the first time interval; and {thetarget time-frequency resources, the first time-frequency resources, andthe second time-frequency resources} all belong to the frequency-domainresources that can be occupied in the first time interval.

According to one aspect of the present disclosure, the above methodfurther includes:

determining a second bit block.

Herein, the second bit block is generated by the first bit block throughchannel coding, and the second bit block includes a positive integernumber of bit(s).

In one embodiment, the first radio signal is an output after the secondbit block is processed sequentially through modulation mapper, layermapper, precoding, resource element mapper, and generation of OFDMsignals.

In one embodiment, the first bit block is channel encoded then ratematched according to the target time-frequency resources to generate thesecond bit block.

In one subembodiment, through the rate matching, a code rate of thefirst signal can be flexibly adjusted according to the occupation of thefirst time-frequency resources.

In one embodiment, the first bit block is channel encoded then puncturedaccording to the target time-frequency resources to generate the secondbit block on the target time-frequency resources.

In one subembodiment, through puncturing, the code rate of the firstradio signal can be maintained, meanwhile, the transmission of controlinformation in the first time-frequency resource can be ensured.

In one embodiment, the channel coding is Convolution coding.

In one embodiment, the channel coding is Turbo coding.

The present disclosure provides a UE for low latency, wherein the UEincludes:

a first receiver, to receive a first signaling;

a second receiver, to receive a second signaling; and

a third receiver, to receive a first radio signal on targettime-frequency resources.

Herein, first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

According to one aspect of the present disclosure, the above UE ischaracterized in that: the second signaling indicates whether the targettime-frequency resources include the first time-frequency resources, andthe first time-frequency resources are common parts of the firstresource pool and the second time-frequency resources.

According to one aspect of the present disclosure, the above UE ischaracterized in that: the second signaling is used for determining afirst time-frequency pattern from P time-frequency pattern(s), the P isa positive integer, the first time-frequency pattern is a time-frequencylocation distribution of the first time-frequency resources in the firstresource pool; and the P time-frequency pattern(s) is(are) predefined,or the P time-frequency pattern(s) is(are) configurable.

According to one aspect of the present disclosure, the above UE ischaracterized in that: the first receiver further receives a thirdsignaling; the third signaling is used for determining frequency-domainresources that can be occupied in the first time interval; and {thetarget time-frequency resources, the first time-frequency resources, andthe second time-frequency resources} all belong to the frequency-domainresources that can be occupied in the first time interval.

The present disclosure provides a base station for low latency, whereinthe base station includes:

a first transmitter, to transmit a first signaling;

a second transmitter, to transmit a second signaling; and

a third transmitter, to transmit a first radio signal on targettime-frequency resources.

Herein, first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

According to one aspect of the present disclosure, the above basestation is characterized in that: the second signaling indicates whetherthe target time-frequency resources include the first time-frequencyresources, and the first time-frequency resources are common parts ofthe first resource pool and the second time-frequency resources.

According to one aspect of the present disclosure, the above basestation is characterized in that: the second signaling is used fordetermining a first time-frequency pattern from P time-frequencypattern(s), the P is a positive integer, the first time-frequencypattern is a time-frequency location distribution of the firsttime-frequency resources in the first resource pool; and the Ptime-frequency pattern(s) is(are) predefined, or the P time-frequencypattern(s) is(are) configurable.

According to one aspect of the present disclosure, the above basestation is characterized in that: the first transmitter furthertransmits a third signaling, the third signaling is used for determiningfrequency-domain resources that can be occupied in the first timeinterval; and {the target time-frequency resources, the firsttime-frequency resources, and the second time-frequency resources} allbelong to the frequency-domain resources that can be occupied in thefirst time interval.

According to one aspect of the present disclosure, the above basestation is characterized in that: the third transmitter furtherdetermines a second bit block, the second bit block is generated by thefirst bit block through channel coding, and the second bit blockincludes a positive integer number of bit(s).

In one embodiment, compared with existing published technologies, thepresent disclosure has the following technical benefits.

According to time-frequency resources occupied to transmit DCIs in asTTI, resources that can be used by UEs scheduled in the sTTI totransmit downlink data are indicated through dynamic signalings, whichensures that the transmission of the downlink data makes effective useof the remaining time-frequency resources other than the resources usedto transmit DCIs in the sTTI, and improves resource utilization andsystem spectrum efficiency.

Signaling overheads that are used to indicate time-frequency resourcesoccupied to transmit DCIs in the sTTI are reduced.

Resources to transmit downlink data are flexibly allocated.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, purposes and advantages of the present application willbecome more apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings.

FIG. 1 is a flowchart illustrating transmissions of a first signaling, asecond signaling and a first radio signal according to one embodiment ofthe present application.

FIG. 2 is a diagram illustrating a network architecture according to oneembodiment of the present application.

FIG. 3 is a diagram illustrating a radio protocol architecture of a userplane and a control plane according to one embodiment of the presentapplication.

FIG. 4 is a diagram illustrating a base station and a given UE accordingto one embodiment of the present application.

FIG. 5 is a flowchart illustrating a downlink transmission of a radiosignal according to one embodiment of the present application.

FIG. 6 is a diagram illustrating first time-frequency resourcesaccording to one embodiment of the present application.

FIG. 7 is a diagram illustrating a relationship between targettime-frequency resources and first time-frequency resources according toone embodiment of the present application.

FIG. 8 is a diagram illustrating target time-frequency resources andsecond time-frequency resources according to one embodiment of thepresent application.

FIG. 9 is a diagram illustrating a relationship between a first resourcepool and first time-frequency resources according to one embodiment ofthe present application.

FIG. 10 is a structure block diagram illustrating a processing device ina UE according to one embodiment of the present application.

FIG. 11 is a structure block diagram illustrating a processing device ina base station according to one embodiment of the present application.

DESCRIPTION OF THE EMBODIMENTS

The technical scheme of the present application is described below infurther detail in conjunction with the drawings. It should be noted thatthe embodiments in the application and the characteristics of theembodiments may be arbitrarily combined if there is no conflict.

Embodiment 1

Embodiment 1 illustrates an example of a flowchart of transmissions of afirst signaling, a second signaling and a first radio signal accordingto one embodiment of the present disclosure, as shown in FIG. 1. In FIG.1, each box represents a step. In Embodiment 1, the UE in the presentdisclosure first receives a first signaling, then receives a secondsignaling, and finally receives a first radio signal, wherein firsttime-frequency resources and the target time-frequency resources areorthogonal, or the target time-frequency resources include the firsttime-frequency resources; time-frequency resources among secondtime-frequency resources other than the first time-frequency resourcesbelong to the target time-frequency resources, and the second signalingis used for determining the first time-frequency resources and thesecond time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

In one embodiment, the first signaling is a high-layer signaling, andthe second signaling is a physical-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling,and the second signaling is a physical-layer signaling.

In one embodiment, the first time-frequency resources are used fortransmitting at least one of L signaling(s), the L is a positiveinteger, and the L signaling(s) includes(include) the second signaling.

In one embodiment, the second signaling indicates within the firstresource pool the first time-frequency resources.

In one embodiment, the second time-frequency resources and the firsttime-frequency resources are partially overlapped.

In one embodiment, the second time-frequency resources and the firsttime-frequency resources are orthogonal (that is, non-overlapped atall).

In one embodiment, the second time-frequency resources include the firsttime-frequency resources.

In one embodiment, the phrase that the first resource pool is reservedto downlink physical layer signalings refers that: the first resourcepool is preferentially occupied by the former one of {the downlinkphysical layer signalings, downlink physical layer data}.

In one embodiment, the phrase that the first resource pool is reservedto downlink physical layer signalings refers that: the first resourcepool can be occupied by the downlink physical layer signalings only.

In one embodiment, the second signaling can dynamically indicate thefirst time-frequency resources, thereby ensuring that the targettime-frequency resources can effectively occupy the remaining of thefirst time-frequency resources, so as to improve resource utilizationand system spectrum efficiency.

In one embodiment, the second signaling is DCI.

In one subembodiment, a UE-specific indication can be realized throughthe DCI, maximizing the flexibility of indication.

In one embodiment, the second signaling includes CFI.

In one embodiment, the second signaling is transmitted through a firstphysical channel, and the first physical channel is used for indicatingtime-frequency resources occupied by DCI in the first time interval.

In one embodiment, the second signaling is transmitted in the first timeinterval.

In one embodiment, the second signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of {an RA, an MCS, an NDI, an RV and a HARQ process number}.

In one embodiment, the target time-frequency resources and the firsttime-frequency resources are orthogonal, wherein the orthogonal meansthat there is no time or frequency belonging to both the targettime-frequency resources and the first time-frequency resources.

In one embodiment, the target time-frequency resources are consecutivein frequency domain.

In one embodiment, the target time-frequency resources are discrete infrequency domain.

In one embodiment, the target time-frequency resources are consecutivein time domain.

In one embodiment, the target time-frequency resources are discrete intime domain.

In one embodiment, the target time-frequency resources include Rsubcarrier(s) in frequency domain, wherein the R is a positive integer.In one subembodiment, the R is a multiple of 12. In anothersubembodiment, any two of the R subcarriers occupy the same number oftime-domain OFDM symbols. In another subembodiment, two of the Rsubcarriers occupy different numbers of time-domain OFDM symbols.

In one affiliated embodiment of the above embodiment, when two of the Rsubcarriers occupy different numbers of time-domain OFDM symbols, thetarget time-frequency resources have the highest flexibility ofallocation.

In one embodiment, the first time-frequency resources are consecutive infrequency domain.

In one embodiment, the first time-frequency resources are discrete infrequency domain.

In one embodiment, the first time-frequency resources are consecutive intime domain.

In one embodiment, the first time-frequency resources are discrete intime domain.

In one embodiment, the first time-frequency resources include Hsubcarriers in frequency domain, wherein the H is a positive integer. Inone subembodiment, the H is a multiple of 12. In another subembodiment,any two of the H subcarriers occupy the same number of time-domain OFDMsymbols. In another subembodiment, two of the H subcarriers occupydifferent numbers of time-domain OFDM symbols.

In one embodiment, the first time-frequency resources belong to thefirst time interval in time domain.

In one embodiment, time-domain resources of the first time-frequencyresources are parts of the first time interval.

In one embodiment, the first time interval includes Q consecutivetime-domain OFDM symbols, the OFDM symbols include cyclic prefixes, andthe R is a positive integer. In one subembodiment, the R is one of {2,4, 7}.

In one embodiment, time-domain resources of the target time-frequencyresources are parts of the first time interval.

In one embodiment, the target time-frequency resources are parts of thesecond time-frequency resources.

In one embodiment, the target time-frequency resources are the same asthe second time-frequency resources.

In one embodiment, the second time-frequency resources are consecutivein frequency domain.

In one embodiment, the second time-frequency resources are discrete infrequency domain.

In one embodiment, the second time-frequency resources are consecutivein time domain.

In one embodiment, the second time-frequency resources are discrete intime domain.

In one embodiment, the second time-frequency resources include Jsubcarrier(s) in frequency domain, wherein the J is a positive integer.In one subembodiment, the J is a multiple of 12. In anothersubembodiment, any two of the J subcarriers occupy the same number oftime-domain OFDM symbols. In another subembodiment, two of the Jsubcarriers occupy different numbers of time-domain OFDM symbols.

In one embodiment, a transport channel corresponding to the first radiosignal is a DL-SCH mapped within the first time interval.

In one embodiment, the first radio signal is an output after the firstbit block is processed sequentially through channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals. In one subembodiment, the first bit block includes oneor more TBs. In one subembodiment, the first bit block is part of a TB.

In one embodiment, through the configuration of the first resource pool,signaling overheads indicating the first time-frequency resources can beeffectively reduced, meanwhile, the flexibility of allocation of thefirst time-frequency resources is ensured.

In one embodiment, the first signaling is a high-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling.

In one embodiment, the first signaling is a physical-layer signaling,and the first signaling includes scheduling information of the firstradio signal, and the scheduling information includes at least one of{an RA, an MCS, an RV, an NDI, a HARQ process number}.

In one embodiment, the first signaling is DCI.

In one embodiment, the first resource pool is consecutive in frequencydomain.

In one embodiment, the first resource pool is discrete in frequencydomain.

Embodiment 2

Embodiment 2 illustrates an example of a diagram for a networkarchitecture, as shown in FIG. 2. FIG. 2 is a diagram illustrating anetwork architecture 200 of NR LTE and Long-Term Evolution Advanced(LTE-A) systems. The NR 5G or LTE network architecture 200 may be calledan Evolved Packet System (EPS) 200 or some other appropriate terms. TheEPS 200 may include one or more UEs 201, a Next Generation-Radio AccessNetwork (NG-RAN) 202, an Evolved Packet Core/5G-Core Network (EPC/5G-CN)210, a Home Subscriber Server (HSS) 220 and an Internet service 230. TheEPS may be interconnected with other access networks. For simpledescription, the entities/interfaces are not shown. As shown in FIG. 2,the EPS provides packet switching services. Those skilled in the art areeasy to understand that various concepts presented throughout thepresent application can be extended to networks providing circuitswitching services or other cellular networks. The NG-RAN includes an NRnode B (gNB) 203 and other gNBs 204. The gNB 203 provides UE 201oriented user plane and control plane protocol terminations. The gNB 203may be connected to other gNBs 204 via an Xn interface (for example,backhaul). The gNB 203 may be called a base station, a base transceiverstation, a radio base station, a radio transceiver, a transceiverfunction, a Basic Service Set (BSS), an Extended Service Set (ESS), aTRP or some other appropriate terms. The gNB 203 provides an accesspoint of the EPC/5G-CN 210 for the UE 201. Examples of UE 201 includecellular phones, smart phones, Session Initiation Protocol (SIP) phones,laptop computers, Personal Digital Assistants (PDAs), Satellite Radios,Global Positioning Systems (GPSs), multimedia devices, video devices,digital audio player (for example, MP3 players), cameras, gamesconsoles, unmanned aerial vehicles, air vehicles, narrow-band physicalnetwork equipment, machine-type communication equipment, land vehicles,automobiles, wearable equipment, or any other devices having similarfunctions. Those skilled in the art may also call the UE 201 a mobilestation, a subscriber station, a mobile unit, a subscriber unit, awireless unit, a remote unit, a mobile device, a wireless device, aradio communication device, a remote device, a mobile subscriberstation, an access terminal, a mobile terminal, a wireless terminal, aremote terminal, a handset, a user agent, a mobile client, a client orsome other appropriate terms. The gNB 203 is connected to the EPC/5G-CN210 via an S1/NG interface. The EPC/5G-CN 210 includes a MobilityManagement Entity/Authentication Management Field/User Plane Function(MME/AMF/UPF) 211, other MMEs/AMEs/UPFs 214, a Service Gateway (S-GW)212 and a Packet Data Network Gateway (P-GW) 213. The MME/AMF/UPF 211 isa control node for processing a signaling between the UE 201 and theEPC/5G-CN 210. Generally, the MME/AMF/UPF 211 provides bearer andconnection management. All user Internet Protocol (IP) packets aretransmitted through the S-GW 212. The S-GW 212 is connected to the P-GW213. The P-GW 213 provides UE IP address allocation and other functions.The P-GW 213 is connected to the Internet service 230. The Internetservice 230 includes IP services corresponding to operators,specifically including internet, intranet, IP Multimedia Subsystems (IPIMSs) and PS Streaming Services (PSSs).

In one embodiment, the UE 201 corresponds to the UE in the presentapplication.

In one embodiment, the gNB 203 corresponds to the base station in thepresent application.

In one embodiment, the UE 201 supports dynamic resource sharing of aPDCCH and a PDSCH.

In one embodiment, the gNB 203 supports dynamic resource sharing of aPDCCH and a PDSCH.

Embodiment 3

Embodiment 3 is a diagram illustrating an embodiment of a radio protocolarchitecture of a user plane and a control plane according to thepresent application, as shown in FIG. 3. FIG. 3 is a diagramillustrating an embodiment of a radio protocol architecture of a userplane and a control plane. In FIG. 3, the radio protocol architecture ofa UE and a gNB is represented by three layers, which are a layer 1, alayer 2 and a layer 3 respectively. The layer 1 (L1) 301 is the lowestlayer and performs signal processing functions of each PHY layer. Thelayer 1 is called PHY 301 in this paper. The layer 2 (L2) 305 is abovethe PHY 301, and is in charge of the link between the UE and the gNB viathe PHY 301. In the user plane, the L2 305 includes a Medium AccessControl (MAC) sublayer 302, a Radio Link Control (RLC) sublayer 303, anda Packet Data Convergence Protocol (PDCP) sublayer 304. All the threesublayers terminate at the gNB of the network side. Although notdescribed in FIG. 3, the UE may include several higher layers above theL2 305, such as a network layer (i.e. IP layer) terminated at the P-GW213 of the network side and an application layer terminated at the otherside (i.e. a peer UE, a server, etc.) of the connection. The PDCPsublayer 304 provides multiplexing among variable radio bearers andlogical channels. The PDCP sublayer 304 also provides a headercompression for a higher-layer packet so as to reduce a radiotransmission overhead. The PDCP sublayer 304 provides security byencrypting a packet and provides support for UE handover between gNBs.The RLC sublayer 303 provides segmentation and reassembling of ahigher-layer packet, retransmission of a lost packet, and reordering ofa lost packet to as to compensate the disordered receiving caused byHARQ. The MAC sublayer 302 provides multiplexing between logicalchannels and transport channels. The MAC sublayer 302 is alsoresponsible for allocating between UEs various radio resources (i.e.,resource blocks) in a cell. The MAC sublayer 302 is also in charge ofHARQ operation. In the control plane, the radio protocol architecture ofthe UE and the gNB is almost the same as the radio protocol architecturein the user plane on the PHY 301 and the L2 305, but there is no headercompression function for the control plane. The control plane alsoincludes a Radio Resource Control (RRC) sublayer 306 in the layer 3(L3). The RRC sublayer 306 is responsible for acquiring radio resources(i.e. radio bearer) and configuring lower layers using an RRC signalingbetween the gNB and the UE.

In one embodiment, the radio protocol architecture shown in FIG. 3 isapplicable to the UE in the present application.

In one embodiment, the radio protocol architecture shown in FIG. 3 isapplicable to the base station in the present application.

In one embodiment, the first signaling in the present application isgenerated by the RRC 306.

In one embodiment, the first signaling in the present application isgenerated by the PHY 301.

In one embodiment, the first radio signal in the present application isgenerated by the PHY 301.

In one embodiment, the second signaling in the present application isgenerated by the PHY 301.

In one embodiment, the third signaling in the present application isgenerated by the RRC 306.

In one embodiment, the third signaling in the present application isgenerated by the PHY 301.

Embodiment 4

Embodiment 4 illustrates a diagram of a base station and a given UEaccording to the present application, as shown in FIG. 4. FIG. 4 is ablock diagram of a gNB 410 in communication with a UE 450 in an accessnetwork.

The UE 450 includes a controller/processor 490, a memory 480, areceiving processor 452, a transmitter/receiver 456, a transmittingprocessor 455, and a data source 467. The transmitter/receiver 456includes an antenna 460. The data source 467 provides higher-layerpacket(s) to the controller/processor 490. The controller/processor 490provides header compression/decompression, encryption/decryption, packetsegmentation and reordering, multiplexing/de-multiplexing between alogical channel and a transport channel, to implement L2 protocols usedfor the user plane and the control plane. The higher-layer packet(s) mayinclude data or control information, for example, DL-SCH or UL-SCH. Thetransmitting processor 455 performs signal transmitting processingfunctions of L1 layer (that is, PHY), including encoding, interleaving,scrambling, modulation, power control/allocation, precoding, generationof physical layer control signaling(s), etc. The receiving processor 452performs signal receiving processing functions of L1 layer (that is,PHY), including decoding, de-interleaving, descrambling, demodulation,decoding, extraction of physical layer control signaling, etc. Thetransmitter 456 is configured to convert a baseband signal provided bythe transmitting processor 455 into a radio-frequency signal andtransmit the radio-frequency signal via the antenna 460. The receiver456 is configured to convert a radio-frequency signal received via theantenna 460 into a baseband signal and provide the baseband signal tothe receiving processor 452.

The base station 410 may include a controller/processor 440, a memory430, a receiving processor 412, a transmitter/receiver 416 and atransmitting processor 415. The transmitter/receiver 416 includes anantenna 420. Higher-layer packet(s) is(are) provided to thecontroller/processor 440. The controller/processor 440 provides headercompression/decompression, encryption/decryption, packet segmentationand reordering, multiplexing/de-multiplexing between a logical channeland a transport channel, to implement L2 protocols used for the userplane and the control plane. The higher-layer packet may include data orcontrol information, for example, DL-SCH or UL-SCH. The transmittingprocessor 415 performs signal transmitting processing functions of L1layer (that is, PHY), including encoding, interleaving, scrambling,modulation, power control/allocation, precoding, generation of physicallayer control signaling(s) (including PBCH, PDCCH, PHICH, PCFICH,reference signal), etc. The first signaling in the present disclosuremay be generated through the transmitting processor 415 or a high-layersignaling provided to the controller/processor 440. The second signalingin the present disclosure is generated through the transmittingprocessor 415. The third signaling in the present disclosure may begenerated through the transmitting processor 415 or a high-layersignaling provided to the controller/processor 440. The receivingprocessor 412 performs signal receiving processing functions of L1 layer(that is, PHY), including decoding, de-interleaving, descrambling,demodulation, decoding, extraction of physical layer controlsignaling(s), etc. The transmitter 416 is configured to convert abaseband signal provided by the transmitting processor 415 into aradio-frequency signal and transmit the radio-frequency signal via theantenna 420. The receiver 416 is configured to convert a radio-frequencysignal received via the antenna 420 into a baseband signal and providethe baseband signal to the receiving processor 412.

In Downlink (DL) transmission, a higher-layer packet DL-SCH is providedto the controller/processor 440. The controller/processor 440 performsfunctions of L2 layer. In downlink transmission, thecontroller/processor 440 provides header compression, encryption, packetsegmentation and reordering, multiplexing between a logical channel anda transport channel, and radio resource allocation for the UE 450 basedon various priorities. The controller/processor 440 is also in charge ofHARQ operation, retransmission of a lost packet, and signalings to theUE450 (the first signaling and the third signaling in the presentdisclosure). The transmitting processor 415 performs signal processingfunctions of L1 layer (that is, PHY). The signal processing functionincludes coding and interleaving, so as to ensure an FEC (Forward ErrorCorrection) and a demodulation of baseband signals corresponding todifferent modulation schemes (i.e., BPSK, QPSK, etc.) at the UE 450side. The modulated symbols are divided into parallel streams. Each ofthe parallel streams is mapped to corresponding subcarriers ofmulti-carriers and/or multi-carrier symbols. Then the transmittingprocessor 415 maps the parallel streams into the antenna 420 via thetransmitter 416 so as to transmit the parallel streams in the form ofRadio Frequency (RF) signals to form the first radio signal in thepresent disclosure. At the receiving side, every receiver 456 receives aradio frequency signal via the corresponding antenna 460. Every receiver456 recovers the baseband information modulated to the RF carrier andprovides the baseband information to the receiving processor 452. Thereceiving processor 452 performs signal receiving processing functionsof L1 layer.

The signal receiving processing functions include receiving the firstradio signal on target time-frequency resources determined in thepresent disclosure, then conducting demodulation corresponding todifferent modulation schemes (i.e., BPSK, QPSK, etc.) in multi-carriersymbols in multi-carrier symbol streams on the target time-frequencyresources, then decoding and de-interleaving to recover the data orcontrol signal transmitted by the gNB 410 on the physical channel, andthen providing the data and control signal to the controller/processor490. The controller/processor 490 performs functions of L2 layer. Thecontroller/processor may be connected to a memory 480 that storesprogram codes and data. The memory 480 may be called a computer readablemedium.

In one embodiment, the UE 450 device includes at least one processor andat least one memory. The at least one memory includes computer programcodes. The at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.The UE 450 device at least receives a first signaling, receives a secondsignaling, and receives a first radio signal on target time-frequencyresources; wherein first time-frequency resources and the targettime-frequency resources are orthogonal, or the target time-frequencyresources include the first time-frequency resources; time-frequencyresources among second time-frequency resources other than the firsttime-frequency resources belong to the target time-frequency resources,and the second signaling is used for determining the firsttime-frequency resources and the second time-frequency resources; thetarget time-frequency resources belong to a first time interval in timedomain, and the first time interval has a duration less than 1millisecond; the first radio signal carries a first bit block, the firstbit block includes a positive integer number of bit(s), and the firstbit block is transmitted on the target time-frequency resources; thefirst signaling is used for determining a first resource pool, the firstresource pool includes the first time-frequency resources, and the firstresource pool is reserved to downlink physical layer signaling(s).

In one embodiment, the UE 450 includes a memory that stores a computerreadable instruction program. The computer readable instruction programgenerates an action when executed by at least one processor. The actionincludes receiving a first signaling, receiving a second signaling, andreceiving a first radio signal on target time-frequency resources;wherein first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, the first bit block includes a positiveinteger number of bit(s), and the first bit block is transmitted on thetarget time-frequency resources; the first signaling is used fordetermining a first resource pool, the first resource pool includes thefirst time-frequency resources, and the first resource pool is reservedto downlink physical layer signaling(s).

In one embodiment, the gNB 410 includes at least one processor and atleast one memory. The at least one memory includes computer programcodes. The at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.The gNB 410 at least transmits a first signaling, transmits a secondsignaling, and transmits a first radio signal on target time-frequencyresources; wherein first time-frequency resources and the targettime-frequency resources are orthogonal, or the target time-frequencyresources include the first time-frequency resources; time-frequencyresources among second time-frequency resources other than the firsttime-frequency resources belong to the target time-frequency resources,and the second signaling is used for determining the firsttime-frequency resources and the second time-frequency resources; thetarget time-frequency resources belong to a first time interval in timedomain, and the first time interval has a duration less than 1millisecond; the first radio signal carries a first bit block, the firstbit block includes a positive integer number of bit(s), and the firstbit block is transmitted on the target time-frequency resources; thefirst signaling is used for determining a first resource pool, the firstresource pool includes the first time-frequency resources, and the firstresource pool is reserved to downlink physical layer signaling(s).

In one embodiment, the gNB 410 includes a memory that stores a computerreadable instruction program. The computer readable instruction programgenerates an action when executed by at least one processor. The actionincludes transmitting a first signaling, transmitting a secondsignaling, and transmitting a first radio signal on targettime-frequency resources; wherein first time-frequency resources and thetarget time-frequency resources are orthogonal, or the targettime-frequency resources include the first time-frequency resources;time-frequency resources among second time-frequency resources otherthan the first time-frequency resources belong to the targettime-frequency resources, and the second signaling is used fordetermining the first time-frequency resources and the secondtime-frequency resources; the target time-frequency resources belong toa first time interval in time domain, and the first time interval has aduration less than 1 millisecond; the first radio signal carries a firstbit block, the first bit block includes a positive integer number ofbit(s), and the first bit block is transmitted on the targettime-frequency resources; the first signaling is used for determining afirst resource pool, the first resource pool includes the firsttime-frequency resources, and the first resource pool is reserved todownlink physical layer signaling(s).

In one embodiment, the UE 450 corresponds to the UE in the presentdisclosure.

In one embodiment, the gNB 410 corresponds to the base station in thepresent disclosure.

In one embodiment, at least the former two of the receiver 456(including the antenna 450), the receiving processor 452 and thecontroller/processor 490 are used for receiving the first signaling inthe present disclosure.

In one embodiment, the receiver 456 (including the antenna 460) and thereceiving processor 452 are used for receiving the second signaling inthe present disclosure.

In one embodiment, at least the former two of the receiver 456(including the antenna 450), the receiving processor 452 and thecontroller/processor 490 are used for receiving the third signaling inthe present disclosure.

In one embodiment, the receiver 456, the receiving processor 452 and thecontroller/processor 490 are used for receiving the first radio signalin the present disclosure.

In one embodiment, at least the former two of the transmitter 416(including the antenna 420), the transmitting processor 415 and thecontroller/processor 440 are used for transmitting the first signalingin the present disclosure.

In one embodiment, the transmitter 416 (including the antenna 420) andthe transmitting processor 415 are used for transmitting the secondsignaling in the present disclosure.

In one embodiment, at least the former two of the transmitter 416(including the antenna 420), the transmitting processor 415 and thecontroller/processor 440 are used for transmitting the third signalingin the present disclosure.

In one embodiment, the transmitter 416 (including the antenna 420), thetransmitting processor 415 and the controller/processor 440 are used fortransmitting the first radio signal in the present disclosure.

Embodiment 5

Embodiment 5 illustrates an example of a flowchart for downlinktransmissions of radio signals, as shown in FIG. 5. In FIG. 5, a basestation N1 is a maintenance base station for a serving cell of a UE U2.Steps marked box Fl are optional.

The base station N1 transmits a third signaling in S11, transmits afirst signaling in S12, transmits a second signaling in S13, determinesa second bit block in S14, and transmits a first radio signal in S15.

The UE U2 receives a third signaling in S21, receive a first signalingin S22, receives a second signaling in S23, and receives a first radiosignal in S24.

In Embodiment 5, the first radio signal occupies target time-frequencyresources, first time-frequency resources and the target time-frequencyresources are orthogonal, or the target time-frequency resources includethe first time-frequency resources; time-frequency resources amongsecond time-frequency resources other than the first time-frequencyresources belong to the target time-frequency resources, and the secondsignaling is used for determining the first time-frequency resources andthe second time-frequency resources; the target time-frequency resourcesbelong to a first time interval in time domain, and the first timeinterval has a duration less than 1 millisecond; the first radio signalcarries a first bit block, and the first bit block includes a positiveinteger number of bit(s); the first signaling is used for determining afirst resource pool, the first resource pool includes the firsttime-frequency resources, and the first resource pool is reserved todownlink physical layer signaling(s); The third signaling is used fordetermining frequency-domain resources occupied by the first timeinterval; The second bit block is generated by the first bit blockthrough channel coding, and the second bit block includes a positiveinteger number of bit(s).

In one embodiment, the second signaling is transmitted through DCI.

In one embodiment, the first signaling is transmitted through RRC.

In one embodiment, the third signaling is transmitted through DCI.

In one embodiment, a transport channel corresponding to the first radiosignal is a DL-SCH mapped at the target time interval.

In one embodiment, the first radio signal is an output after the firstbit block is processed sequentially through channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals. In one subembodiment, the first bit block includes oneor more TBs. In one subembodiment, the first bit block is part of a TB.

In one embodiment, the first bit block is channel encoded then ratematched according to the target time-frequency resources to generate asecond bit block.

In one embodiment, the first bit block is channel encoded then puncturedaccording to the target time-frequency resources to generate a secondbit block.

Embodiment 6

Embodiment 6 illustrates an example of a diagram of first time-frequencyresources, as shown in FIG. 6. In FIG. 6, the horizontal axis representstime and the vertical axis represents frequency, the maximum rectangulararea represents first time-frequency resources, the first time-frequencyresources are used to transmit at least one of L signalings, rectanglesmarked by numbers represent respectively time-frequency resourcesoccupied by signalings among the L signalings that are contained in thefirst time-frequency resources, the L is a positive integer, and thesecond signaling is one of the L signalings.

In one embodiment, the time-frequency resources occupied by the Lsignalings are of the same size.

In one embodiment, the time-frequency resources occupied by twosignalings among the L signalings are different.

In one embodiment, the L signalings are transmitted through DCI.

In one embodiment, the first time-frequency resources includetime-frequency resources occupied by the second signaling.

In one embodiment, the first time-frequency resources includetime-frequency resources among the time-frequency resources occupied bythe L signalings other than the time-frequency resources occupied by thesecond signaling.

Embodiment 7

Embodiment 7 illustrates an example of a diagram of a relationshipbetween target time-frequency resources and first time-frequencyresources, as shown in FIG. 7. In FIG. 7, inner boxes represent thefirst time-frequency resources and the target time-frequency resourcesrespectively. A first time interval has a duration less than 1millisecond.

In Embodiment 7, the first time-frequency resources and the targettime-frequency resources are orthogonal, wherein the orthogonal meansthat there is no RU belonging to both the target time-frequencyresources and the first time-frequency resources. The RU occupies onesubcarrier in frequency domain and occupies a duration of one OFDMsymbol in time domain.

In one embodiment, the first time-frequency resources belong to thefirst time interval in time domain.

In one embodiment, time-domain resources of the first time-frequencyresources are parts of the first time interval.

In one embodiment, the target time-frequency resources belong to thefirst time interval in time domain.

In one embodiment, time-domain resources of the target time-frequencyresources are parts of the first time interval.

Embodiment 8

Embodiment 8 illustrates an example of a diagram of a relationshipbetween target time-frequency resources and second time-frequencyresources, as shown in FIG. 8. In FIG. 8, a box filled by right slashesrepresents the target time-frequency resources, and a box having a heavyline frame represents the second time-frequency resources.

In one embodiment, the target time-frequency resources aretime-frequency resources among the second time-frequency resources otherthan the first time-frequency resources.

In one embodiment, the target time-frequency resources are the same asthe second time-frequency resources.

In one embodiment, the second time-frequency resources include Jsubcarriers in frequency domain, wherein the J is a positive integer. Inone subembodiment, the J is a multiple of 12. In another subembodiment,any two of the J subcarriers occupy the same number of time-domain OFDMsymbols. In another subembodiment, two of the J subcarriers occupydifferent numbers of time-domain OFDM symbols.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of {an RA, an MCS, an NDI, an RV, a HARQ process number}. Thesecond time-frequency resources are indicated by the RA.

Embodiment 9

Embodiment 9 illustrates an example of a diagram of a relationshipbetween a first resource pool and first time-frequency resources, asshown in FIG. 9. In FIG. 9, fine-line grids correspond to the firsttime-frequency resources, rectangles having heavy line frames correspondto the first resource pool, the first resource pool includes the firsttime-frequency resources, and the first resource pool is indicated by afirst signaling. The first resource pool is discrete in time domain.

In one embodiment, the first resource pool is consecutive in frequencydomain.

In one embodiment, the first resource pool is discrete in frequencydomain.

In one embodiment, the first signaling is an RRC signaling.

Embodiment 10

Embodiment 10 illustrates an example of a structure block diagram of aprocessing device in a UE, as shown in FIG. 10. In FIG. 10, theprocessing device 1000 in the UE includes a first receiver 1001, asecond receiver 1002 and a third receiver 1003. The first receiver 1001includes the receiver 456 (including the antenna 460), the receivingprocessor 452 and the controller/processor 490 shown in the FIG. 4 ofthe present disclosure; the second receiver 1002 includes the receiver456 (including the antenna 460) and the receiving processor 452 shown inthe FIG. 4 of the present disclosure; and the third receiver 1003includes the receiver 456 (including the antenna 460), the receivingprocessor 452 and the controller/processor 490 shown in the FIG. 4 ofthe present disclosure.

The first receiver 1001 receives a first signaling and a thirdsignaling; the second receiver 1002 receives a second signaling; and thethird receiver 1003 receives a first radio signal on targettime-frequency resources.

In Embodiment 10, first time-frequency resources and the targettime-frequency resources are orthogonal, or the target time-frequencyresources include the first time-frequency resources; time-frequencyresources among second time-frequency resources other than the firsttime-frequency resources belong to the target time-frequency resources,and the second signaling is used for determining the firsttime-frequency resources and the second time-frequency resources; thetarget time-frequency resources belong to a first time interval in timedomain, and the first time interval has a duration less than 1millisecond; the first radio signal carries a first bit block, the firstbit block includes a positive integer number of bit(s), and the firstbit block is transmitted on the target time-frequency resources; thefirst signaling is used for determining a first resource pool, the firstresource pool includes the first time-frequency resources, and the firstresource pool is reserved to downlink physical layer signaling(s); Thethird signaling is used for determining frequency-domain resources thatcan be occupied in the first time interval; and {the targettime-frequency resources, the first time-frequency resources, and thesecond time-frequency resources} all belong to the frequency-domainresources that can be occupied in the first time interval.

In one embodiment, the second signaling indicates whether the targettime-frequency resources include the first time-frequency resources, andthe first time-frequency resources are common parts of the firstresource pool and the second time-frequency resources.

In one embodiment, the second signaling is used for determining a firsttime-frequency pattern from P time-frequency pattern(s), the P is apositive integer, the first time-frequency pattern is a time-frequencylocation distribution of the first time-frequency resources in the firstresource pool; and the P time-frequency pattern(s) is(are) predefined,or the P time-frequency pattern(s) is(are) configurable.

In one embodiment, the second signaling is transmitted through DCI, thefirst signaling received by the second receiver 1001 is transmittedthrough RRC, and the third signaling is transmitted through DCI.

In one embodiment, the first radio signal is an output after the firstbit block is processed sequentially through channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals. In one subembodiment, the first bit block includes oneor more TBs.

Embodiment 11

Embodiment 11 illustrates an example of a structure block diagram of aprocessing device in a base station, as shown in FIG. 11. In FIG. 11,the processing device 1100 in the base station includes a firsttransmitter 1101, a second transmitter 1102 and a third transmitter1103. The first transmitter 1101 includes the transmitter 416 (includingthe antenna 420), the transmitting processor 415 and thecontroller/processor 440 shown in the FIG. 4 of the present disclosure.The second transmitter 1102 includes the transmitter 416 (including theantenna 420) and the transmitting processor 415 shown in the FIG. 4 ofthe present disclosure. The third transmitter 1103 includes thetransmitter 416 (including the antenna 420), the transmitting processor415 and the controller/processor 440 shown in the FIG. 4 of the presentdisclosure.

The first transmitter 1101 transmits a first signaling; the secondtransmitter 1102 transmits a second signaling; and the third transmitter1103 transmits a first radio signal on target time-frequency resources.

In Embodiment 11, the target time-frequency resources includetime-frequency resources among the second time-frequency resources otherthan the first time-frequency resources, the second signaling indicates{whether the target time-frequency resources include the firsttime-frequency resources, the second time-frequency resources}, thefirst time-frequency resources are common parts of the first resourcepool and the second time-frequency resources; The target time-frequencyresources belong to a first time interval in time domain, and the firsttime interval has a duration less than 1 millisecond. The first radiosignal carries a first bit block, the first bit block includes apositive integer number of bit(s), and the first bit block istransmitted on the target time-frequency resources; The first signalingis used for determining a first resource pool, and the first resourcepool includes the first time-frequency resources; The first resourcepool is reserved to downlink physical layer signaling(s).

In one embodiment, the second signaling indicates whether the targettime-frequency resources include the first time-frequency resources, andthe first time-frequency resources are common part of the first resourcepool and the second time-frequency resources.

In one embodiment, the second signaling is used for determining a firsttime-frequency pattern from P time-frequency pattern(s), the P is apositive integer, the first time-frequency pattern is a time-frequencylocation distribution of the first time-frequency resources in the firstresource pool; and the P time-frequency pattern(s) is(are) predefined,or the P time-frequency pattern(s) is(are) configurable.

In one embodiment, the third transmitter 1103 further determines asecond bit block, the second bit block is generated by the first bitblock through channel coding, and the second bit block includes apositive integer number of bit(s).

In one affiliated embodiment of the above embodiment, the second bitblock is generated on the target time-frequency resources by the firstbit block through channel coding and rate matching.

In another affiliated embodiment of the above embodiment, the second bitblock is generated on the target time-frequency resources by the firstbit block through channel coding and puncturing.

In one embodiment, the first transmitter 1101 further transmits a thirdsignaling, and the third signaling is used for determiningfrequency-domain resources that can be occupied in the first timeinterval; and {the target time-frequency resources, the firsttime-frequency resources, and the second time-frequency resources} allbelong to the frequency-domain resources that can be occupied in thefirst time interval.

In one embodiment, the second signaling is DCI, the first signaling isan RRC signaling, and the third signaling is DCI.

In one embodiment, the first radio signal is an output after the firstbit block is processed sequentially through channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals. In one subembodiment, the first bit block includes oneor more TBs.

The ordinary skill in the art may understand that all or part steps inthe above method may be implemented by instructing related hardwarethrough a program. The program may be stored in a computer readablestorage medium, for example Read-Only Memory (ROM), hard disk or compactdisc, etc. Optionally, all or part steps in the above embodiments alsomay be implemented by one or more integrated circuits. Correspondingly,each module unit in the above embodiment may be realized in the form ofhardware, or in the form of software function modules. The presentapplication is not limited to any combination of hardware and softwarein specific forms. The UE or terminal in the present applicationincludes but not limited to mobile phones, tablet computers, notebooks,network cards, low-power equipment, vehicle-mounted communicationequipment and other wireless communication equipment. The base stationor network side equipment in the present application includes but notlimited to macro-cellular base stations, micro-cellular base stations,home base stations, relay base station and other radio communicationequipment.

The above are merely the preferred embodiments of the presentapplication and are not intended to limit the scope of protection of thepresent application. Any modification, equivalent substitute andimprovement made within the spirit and principle of the presentapplication are intended to be included within the scope of protectionof the present application.

What is claimed is:
 1. A method in a User Equipment (UE) for lowlatency, comprising: receiving a first signaling; receiving a secondsignaling; and receiving a first radio signal on target time-frequencyresources; wherein first time-frequency resources and the targettime-frequency resources are orthogonal, or the target time-frequencyresources comprise the first time-frequency resources; time-frequencyresources among second time-frequency resources other than the firsttime-frequency resources belong to the target time-frequency resources,and the second signaling is used for determining the firsttime-frequency resources and the second time-frequency resources; thetarget time-frequency resources belong to a first time interval in timedomain, and the first time interval has a duration less than 1millisecond; the first radio signal carries a first bit block, the firstbit block comprises a positive integer number of bit(s), and the firstbit block is transmitted on the target time-frequency resources; thefirst signaling is used for determining a first resource pool, the firstresource pool comprises the first time-frequency resources, and thefirst resource pool is reserved to downlink physical layer signaling(s);the second signaling includes scheduling information of the first radiosignal, and the scheduling information includes at least one of aResource Allocation (RA), a Modulation and Coding Scheme (MCS), a NewData Indicator (NDI), a Redundancy Version (RV) and a HARQ processnumber; the first signaling is transmitted through RRC, the secondsignaling is transmitted through DCI, a transport channel correspondingto the first radio signal is a Downlink Shared Channel (DL-SCH) mappedwithin the first time interval.
 2. The method according to claim 1,wherein the second signaling indicates whether the target time-frequencyresources comprise the first time-frequency resources, and the firsttime-frequency resources are common parts of the first resource pool andthe second time-frequency resources.
 3. The method according to claim 1,wherein the first time-frequency resources comprise H subcarriers infrequency domain, the H is a positive integer, and the H is a multipleof 12, the second time-frequency resources include J subcarriers infrequency domain, wherein the J is a positive integer, and the J is amultiple of 12, the second time-frequency resources are consecutive intime domain.
 4. The method according to claim 1, wherein the secondsignaling is used for determining a first time-frequency pattern from Ptime-frequency pattern(s), the P is a positive integer, the firsttime-frequency pattern is a time-frequency location distribution of thefirst time-frequency resources in the first resource pool; and the Ptime-frequency pattern(s) is(are) predefined, or the P time-frequencypattern(s) is(are) configurable.
 5. The method according to claim 1,further comprising: receiving a third signaling; wherein the thirdsignaling is used for determining frequency-domain resources that can beoccupied in the first time interval; and the target time-frequencyresources, the first time-frequency resources, and the secondtime-frequency resources all belong to the frequency-domain resourcesthat can be occupied in the first time interval.
 6. A method in a basestation for low latency, comprising: transmitting a second signaling;transmitting a first signaling; and transmitting a first radio signal ontarget time-frequency resources; wherein first time-frequency resourcesand the target time-frequency resources are orthogonal, or the targettime-frequency resources comprise the first time-frequency resources;time-frequency resources among second time-frequency resources otherthan the first time-frequency resources belong to the targettime-frequency resources, and the second signaling is used fordetermining the first time-frequency resources and the secondtime-frequency resources; the target time-frequency resources belong toa first time interval in time domain, and the first time interval has aduration less than 1 millisecond; the first radio signal carries a firstbit block, the first bit block comprises a positive integer number ofbit(s), and the first bit block is transmitted on the targettime-frequency resources; the first signaling is used for determining afirst resource pool, the first resource pool comprises the firsttime-frequency resources, and the first resource pool is reserved todownlink physical layer signaling(s); the second signaling includesscheduling information of the first radio signal, and the schedulinginformation includes at least one of a Resource Allocation (RA), aModulation and Coding Scheme (MCS), a New Data Indicator (NDI), aRedundancy Version (RV) and a HARQ process number; the first signalingis transmitted through RRC, the second signaling is transmitted throughDCI, a transport channel corresponding to the first radio signal is aDownlink Shared Channel (DL-SCH) mapped within the first time interval.7. The method according to claim 6, wherein the second signalingindicates whether the target time-frequency resources comprise the firsttime-frequency resources, and the first time-frequency resources arecommon parts of the first resource pool and the second time-frequencyresources.
 8. The method according to claim 6, wherein the firsttime-frequency resources comprise H subcarriers in frequency domain, theH is a positive integer, and the H is a multiple of 12, the secondtime-frequency resources include J subcarriers in frequency domain,wherein the J is a positive integer, and the J is a multiple of 12, thesecond time-frequency resources are consecutive in time domain.
 9. Themethod according to claim 6, wherein the second signaling is used fordetermining a first time-frequency pattern from P time-frequencypattern(s), the P is a positive integer, the first time-frequencypattern is a time-frequency location distribution of the firsttime-frequency resources in the first resource pool; and the Ptime-frequency pattern(s) is(are) predefined, or the P time-frequencypattern(s) is(are) configurable.
 10. The method according to claim 6,further comprising: determining a second bit block; wherein the firstbit block is channel encoded then rate matched according to the targettime-frequency resources to generate the second bit block, and thesecond bit block comprises a positive integer number of bit(s).
 11. A UEfor low latency, comprising: a first receiver, to receive a firstsignaling; a second receiver, to receive a second signaling; and a thirdreceiver, to receive a first radio signal on target time-frequencyresources; wherein first time-frequency resources and the targettime-frequency resources are orthogonal, or the target time-frequencyresources comprise the first time-frequency resources; time-frequencyresources among second time-frequency resources other than the firsttime-frequency resources belong to the target time-frequency resources,and the second signaling is used for determining the firsttime-frequency resources and the second time-frequency resources; thetarget time-frequency resources belong to a first time interval in timedomain, and the first time interval has a duration less than 1millisecond; the first radio signal carries a first bit block, the firstbit block comprises a positive integer number of bit(s), and the firstbit block is transmitted on the target time-frequency resources; thefirst signaling is used for determining a first resource pool, the firstresource pool comprises the first time-frequency resources, and thefirst resource pool is reserved to downlink physical layer signaling(s);the second signaling includes scheduling information of the first radiosignal, and the scheduling information includes at least one of aResource Allocation (RA), a Modulation and Coding Scheme (MCS), a NewData Indicator (NDI), a Redundancy Version (RV) and a HARQ processnumber; the first signaling is transmitted through RRC, the secondsignaling is transmitted through DCI, a transport channel correspondingto the first radio signal is a Downlink Shared Channel (DL-SCH) mappedwithin the first time interval.
 12. The UE according to claim 11,wherein the second signaling indicates whether the target time-frequencyresources comprise the first time-frequency resources, and the firsttime-frequency resources are common parts of the first resource pool andthe second time-frequency resources.
 13. The UE according to claim 11,wherein the first time-frequency resources comprise H subcarriers infrequency domain, the H is a positive integer, and the H is a multipleof 12, the second time-frequency resources include J subcarriers infrequency domain, wherein the J is a positive integer, and the J is amultiple of 12, the second time-frequency resources are consecutive intime domain.
 14. The UE according to claim 11, wherein the secondsignaling is used for determining a first time-frequency pattern from Ptime-frequency pattern(s), the P is a positive integer, the firsttime-frequency pattern is a time-frequency location distribution of thefirst time-frequency resources in the first resource pool; and the Ptime-frequency pattern(s) is(are) predefined, or the P time-frequencypattern(s) is(are) configurable.
 15. The UE according to claim 11,wherein the first receiver further receives a third signaling; the thirdsignaling is used for determining frequency-domain resources that can beoccupied in the first time interval; and the target time-frequencyresources, the first time-frequency resources, and the secondtime-frequency resources all belong to the frequency-domain resourcesthat can be occupied in the first time interval.
 16. A base station forlow latency, comprising: a first transmitter, to transmit a firstsignaling; a second transmitter, to transmit a second signaling; and athird transmitter, to transmit a first radio signal on targettime-frequency resources; wherein first time-frequency resources and thetarget time-frequency resources are orthogonal, or the targettime-frequency resources comprise the first time-frequency resources;time-frequency resources among second time-frequency resources otherthan the first time-frequency resources belong to the targettime-frequency resources, and the second signaling is used fordetermining the first time-frequency resources and the secondtime-frequency resources; the target time-frequency resources belong toa first time interval in time domain, and the first time interval has aduration less than 1 millisecond; the first radio signal carries a firstbit block, the first bit block comprises a positive integer number ofbit(s), and the first bit block is transmitted on the targettime-frequency resources; the first signaling is used for determining afirst resource pool, the first resource pool comprises the firsttime-frequency resources, and the first resource pool is reserved todownlink physical layer signaling(s); the second signaling includesscheduling information of the first radio signal, and the schedulinginformation includes at least one of a Resource Allocation (RA), aModulation and Coding Scheme (MCS), a New Data Indicator (NDI), aRedundancy Version (RV) and a HARQ process number; the first signalingis transmitted through RRC, the second signaling is transmitted throughDCI, a transport channel corresponding to the first radio signal is aDownlink Shared Channel (DL-SCH) mapped within the first time interval.17. The base station according to claim 16, wherein the second signalingindicates whether the target time-frequency resources comprise the firsttime-frequency resources, and the first time-frequency resources arecommon parts of the first resource pool and the second time-frequencyresources.
 18. The base station according to claim 16, wherein the firsttime-frequency resources comprise H subcarriers in frequency domain, theH is a positive integer, and the H is a multiple of 12, the secondtime-frequency resources include J subcarriers in frequency domain,wherein the J is a positive integer, and the J is a multiple of 12, thesecond time-frequency resources are consecutive in time domain.
 19. Thebase station according to claim 16, wherein the second signaling is usedfor determining a first time-frequency pattern from P time-frequencypattern(s), the P is a positive integer, the first time-frequencypattern is a time-frequency location distribution of the firsttime-frequency resources in the first resource pool; and the Ptime-frequency pattern(s) is(are) predefined, or the P time-frequencypattern(s) is(are) configurable.
 20. The base station according to claim16, wherein the third transmitter further determines a second bit block;the first bit block is channel encoded then rate matched according tothe target time-frequency resources to generate the second bit block,and the second bit block comprises a positive integer number of bit(s).